A 28 year old woman presents with diffuse hair loss, scaly dermatitis around the eyes and mouth, and depressed mood. She has been consuming large amounts of raw egg whites as part of a diet regimen. Which of the following vitamin deficiencies is the most likely cause of her symptoms?
- A)Riboflavin
- B)Vitamin C
- C)Niacin
- D)BiotinGABARITO
- E)Folate
Explicação
This patient has biotin deficiency caused by avidin in raw egg whites binding biotin and preventing absorption. Biotin is a cofactor for carboxylase enzymes, and deficiency produces dermatitis, alopecia, and enteritis or mood changes. The dietary history is a ... Ver explicação completa e trilha adaptativa →